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SPRS717F –OCTOBER 2011–REVISED APRIL 2013
Table 5-15. Switching Characteristics for RMII[x]_TXD[1:0], and RMII[x]_TXEN - RMII Mode
(see Figure 5-12)
NO.
PARAMETER
MIN
TYP
MAX
UNIT
td(REF_CLK-TXD)
td(REF_CLK-TXEN)
tr(TXD)
Delay time, REF_CLK high to TXD[1:0] valid
Delay time, REF_CLK to TXEN valid
Rise time, TXD outputs
1
2
13
ns
2
3
1
1
5
5
ns
ns
tr(TX_EN)
Rise time, TX_EN output
tf(TXD)
Fall time, TXD outputs
tf(TX_EN)
Fall time, TX_EN output
1
RMII[x]_REFCLK (Input)
RMII[x]_TXD[1:0],
RMII[x]_TXEN (Outputs)
3
2
Figure 5-12. RMII[x]_TXD[1:0], RMII[x]_TXEN Timing - RMII Mode
Copyright © 2011–2013, Texas Instruments Incorporated
Peripheral Information and Timings
123
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